Injection in ExpressTech Quiz and Survey Master – Easy Quiz and Survey Maker
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Quiz And Survey Master plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to and including 11.1.0. This is due to insufficient input sanitization and the execution of do_shortcode() on user-submitted quiz answer text. User-submitted answers pass through sanitize_text_field() and htmlspecialchars(), which only strip HTML tags but do not encode or remove shortcode brackets [ and ]. When quiz results are displayed, the plugin calls do_shortcode() on the entire results page output (including user answers), causing any injected shortcodes to be executed. This makes it possible for unauthenticated attackers to inject arbitrary WordPress shortcodes such as [qsm_result id=X] to access other users' quiz submissions without authorization, as the qsm_result shortcode lacks any authorization checks.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ExpressTech | Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker | up to 10.1.0 | — | No fix listed | CNA |
- Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker VendorExpressTech Affected up to 10.1.0 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:expresstech:quiz_and_survey_master:*:*:*:*:*:*:*:* | — | — | ExpressTech |
- cpe:2.3:a:expresstech:quiz_and_survey_master:*:*:*:*:*:*:*:* Versions — — ·ExpressTech
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5797
- 2026-10-03 Alias added: GHSA-7rv8-2hr2-39f9
- 2026-10-25 EPSS moved to the below the 50th percentile
References
Other 10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f2aa33cc-c1c4-42d4-9c2f-54648426ee4b?source=cve
- https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/class-qsm-results-pages.php#L193
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/class-qsm-results-pages.php#L193
- https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/class-qmn-quiz-manager.php#L572
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/class-qmn-quiz-manager.php#L572
- https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/question-types/class-question-review-text.php#L15
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/question-types/class-question-review-text.php#L15
- https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/question-types/class-question-review.php#L40
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/question-types/class-question-review.php#L40
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3506094%40quiz-master-next&new=3506094%40quiz-master-next&sfp_email=&sfph_mail=
More ExpressTech vulnerabilities
- TI-2020-18392 An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. CVSS 3.1CRITICAL 9.9
- TI-2024-05207 Quiz And Survey Master < 9.0.2 - Contributor+ SQLi CVSS 3.1HIGH 8.8
- TI-2024-05583 Quiz and Survey Master < 9.0.5 - Contributor+ Stored XSS CVSS 3.1MEDIUM 6.5
- TI-2024-09897 Quiz and Survey Master (QSM) < 9.2.1 - Author+ Stored XSS CVSS 3.1MEDIUM 6.1
- TI-2024-05932 Quiz and Survey Master (QSM) < 9.1.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.9
- TI-2024-04590 Quiz And Survey Master < 9.0.2 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.5
Sources
- CVE-2026-5797 · CVE Program
- CVE-2026-5797 · NVD
- FIRST EPSS
- GHSA-7rv8-2hr2-39f9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences